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NeilBlanchard · 12-10-2008, 06:03 AM

Hi,

I've wondered the same thing -- my best guess is that anything that sticks out beyond the tire sidewall is probably less helpful, so, flat(ter) is better.

12-10-2008, 06:03 AM	#18 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,908 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,952 Times in 1,845 Posts	Hi, I've wondered the same thing -- my best guess is that anything that sticks out beyond the tire sidewall is probably less helpful, so, flat(ter) is better. __________________ Sincerely, Neil http://neilblanchard.blogspot.com/